tofsee | 989453998eb96a29b42a09855a8733715faa3cf4e9110e7e0377a703763a0bf0 | Triage

Sharing

General

Target

85f05595c757c694136ceecaab4ef1a9_JaffaCakes118
Size

142KB
Sample

240531-esfl8sff89
MD5

85f05595c757c694136ceecaab4ef1a9
SHA1

decc013e8aed5b4d1bd93880862eac3f76b7be64
SHA256

989453998eb96a29b42a09855a8733715faa3cf4e9110e7e0377a703763a0bf0
SHA512

d59f987761dbf1fe2d248ecfb179a8df306c1508f7264df2713350405fb329da7bbd8ba42611f336c5cc3a2dc54e74d0b3eafa84d20cb5ad44c9302fd275c748
SSDEEP

3072:UO8/FLfgW6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b3U:A94zwFLnKP46uC

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

- Target
  
  85f05595c757c694136ceecaab4ef1a9_JaffaCakes118
- Size
  
  142KB
- MD5
  
  85f05595c757c694136ceecaab4ef1a9
- SHA1
  
  decc013e8aed5b4d1bd93880862eac3f76b7be64
- SHA256
  
  989453998eb96a29b42a09855a8733715faa3cf4e9110e7e0377a703763a0bf0
- SHA512
  
  d59f987761dbf1fe2d248ecfb179a8df306c1508f7264df2713350405fb329da7bbd8ba42611f336c5cc3a2dc54e74d0b3eafa84d20cb5ad44c9302fd275c748
- SSDEEP
  
  3072:UO8/FLfgW6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b3U:A94zwFLnKP46uC
Score

10^/10

tofsee evasion execution persistence trojan
- Tofsee
  Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
  trojan tofsee
- Windows security bypass
  evasion trojan
- Creates new service(s)
  persistence execution
- Modifies Windows Firewall
  evasion
- Sets service image path in registry
  persistence
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetThreadContext
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

Service Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Defense Evasion

Impair Defenses

Disable or Modify System Firewall

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

tofseeevasionexecutionpersistencetrojan

behavioral2

tofseeevasionexecutionpersistencetrojan